Default Power Plan options apart from Balanced have disappeared, how to restore them?

On Windows 8.1 on a Microsoft Surface, normally I have Balanced, Power saver, and maybe High Performance. Today I only have Balanced ... where could the others have gone?

When I go to Control Panel\Hardware and Sound\Power Options it only lists Balanced in the 'Selected plan' section; the others are nowhere to be seen.

Solution 1:

EDIT: I'm sorry, you were asking for the default policies back. I proposed the solution I used for our custom policies. For the default simply execute:

:H:\>powercfg /LIST

Existing Power Schemes (* Active)
-----------------------------------
Power Scheme GUID: 381b4222-f694-41f0-9685-ff5bb260df2e  (Balanced) *
Power Scheme GUID: 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c  (High performance)
Power Scheme GUID: a1841308-3541-4fab-bc81-f71556f20b4a  (Power saver)

I'll leave my original answer below to be complete.

They should be here: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ Controls Folder\PowerCfg\PowerPolicies

If they are missing and you have another machine you can list all GUIDs on the pc with the functioning policies:

powercfg /LIST

then export all GUIDs (this is an example, make sure to adjust to whatever GUID is shown and file you want):

powercfg -EXPORT C:\Temp\test.pow 381b4222-f694-41f0-9685-ff5bb260df2e

Then copy the .pow files and execute this on your machine with issues:

powercfg /IMPORT C:\test.pow